<PAGE> PAGE 1
000 B000000 12/31/96
000 C000000 0000811858
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 U
001 A000000 DREYFUS 100% U.S. TREASURY SHORT TERM FUND
001 B000000 811-5077
001 C000000 2129226822
002 A000000 200 PARK AVENUE
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10166
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
018 000000 Y
019 A000000 Y
019 B000000 152
019 C000000 DREYFUSFAM
022 A000001 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
022 B000001 13-5674085
022 C000001 474885
022 D000001 546092
022 A000002 GOLDMAN, SACHS & CO. INC.
022 B000002 13-5108880
022 C000002 177357
022 D000002 125511
022 A000003 G.X. CLARKE & CO.
022 B000003 13-2969143
022 C000003 91902
022 D000003 144191
022 A000004 FUJI SECURITIES INC.
022 B000004 36-2880742
022 C000004 110130
022 D000004 80687
022 A000005 ARBOR TRADING GROUP, INC.
022 B000005 36-3540782
022 C000005 80186
022 D000005 51025
022 A000006 SALOMON BROTHERS INC.
022 B000006 13-3082694
022 C000006 58061
022 D000006 57416
022 A000007 MORGAN STANLEY & CO. INCORPORATED
<PAGE> PAGE 2
022 B000007 13-2655998
022 C000007 56164
022 D000007 17838
022 A000008 SMITH BARNEY INC.
022 B000008 13-1912900
022 C000008 44666
022 D000008 28139
022 A000009 SPEAR, LEEDS & KELLOGG
022 B000009 13-5515160
022 C000009 13268
022 D000009 22032
022 A000010 DEUTSCHE BANK SECURITIES CORPORATION
022 B000010 13-2730828
022 C000010 16262
022 D000010 18108
023 C000000 1151708
023 D000000 1113522
026 A000000 Y
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 Y
027 000000 Y
028 A010000 4638
028 A020000 763
028 A030000 0
028 A040000 28510
028 B010000 2576
028 B020000 681
028 B030000 0
028 B040000 5550
028 C010000 4236
028 C020000 688
028 C030000 0
028 C040000 5540
028 D010000 3621
028 D020000 672
028 D030000 0
028 D040000 4776
028 E010000 7091
028 E020000 639
028 E030000 0
028 E040000 5153
028 F010000 3339
028 F020000 678
028 F030000 0
028 F040000 7972
<PAGE> PAGE 3
028 G010000 25501
028 G020000 4121
028 G030000 0
028 G040000 57501
028 H000000 0
062 A000000 Y
062 B000000 113.8
062 C000000 0.0
062 D000000 0.0
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 0.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 0
063 B000000 2.4
064 A000000 Y
064 B000000 N
071 A000000 958172
071 B000000 887475
071 C000000 164537
071 D000000 539
072 A000000 12
072 B000000 13117
072 C000000 0
072 D000000 0
072 E000000 0
072 F000000 1167
072 G000000 0
072 H000000 0
072 I000000 593
072 J000000 19
072 K000000 0
072 L000000 13
072 M000000 34
072 N000000 17
072 O000000 1
072 P000000 0
072 Q000000 0
072 R000000 28
072 S000000 12
072 T000000 0
<PAGE> PAGE 4
072 U000000 0
072 V000000 0
072 W000000 3
072 X000000 1887
072 Y000000 525
072 Z000000 11755
072AA000000 1307
072BB000000 4009
072CC010000 0
072CC020000 1586
072DD010000 11821
072DD020000 0
072EE000000 0
073 A010000 0.9000
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 224
074 B000000 0
074 C000000 0
074 D000000 0
074 E000000 0
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 213807
074 J000000 0
074 K000000 0
074 L000000 2414
074 M000000 17
074 N000000 216462
074 O000000 28028
074 P000000 58
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 550
074 S000000 0
074 T000000 187826
074 U010000 12678
074 U020000 0
074 V010000 14.82
074 V020000 0.00
074 W000000 0.0000
074 X000000 5900
074 Y000000 0
075 A000000 0
075 B000000 194565
076 000000 0.00
077 A000000 Y
<PAGE> PAGE 5
077 B000000 Y
077 Q010000 Y
078 000000 N
080 A000000 VIGILANT INSURANCE COMPANY
080 B000000 NATIONAL UNION FIRE INS. CO. OF PITTSBURG, PA
080 C000000 125
081 A000000 Y
081 B000000 168
082 A000000 N
082 B000000 0
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
SIGNATURE ELIZABETH KEELEY
TITLE V.P. & ASST. SECTY.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000811858
<NAME> DREYFUS 100% U.S. TREASURY SHORT TERM FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 214262
<INVESTMENTS-AT-VALUE> 213807
<RECEIVABLES> 2414
<ASSETS-OTHER> 241
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 216462
<PAYABLE-FOR-SECURITIES> 28028
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 608
<TOTAL-LIABILITIES> 28636
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 203852
<SHARES-COMMON-STOCK> 12678
<SHARES-COMMON-PRIOR> 12467
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (15571)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (455)
<NET-ASSETS> 187826
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 13117
<OTHER-INCOME> 0
<EXPENSES-NET> 1362
<NET-INVESTMENT-INCOME> 11755
<REALIZED-GAINS-CURRENT> (2702)
<APPREC-INCREASE-CURRENT> (1586)
<NET-CHANGE-FROM-OPS> 7467
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 11821
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 6545
<NUMBER-OF-SHARES-REDEEMED> (6928)
<SHARES-REINVESTED> 593
<NET-CHANGE-IN-ASSETS> (900)
<ACCUMULATED-NII-PRIOR> 66
<ACCUMULATED-GAINS-PRIOR> (12869)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1167
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1887
<AVERAGE-NET-ASSETS> 194565
<PER-SHARE-NAV-BEGIN> 15.14
<PER-SHARE-NII> .90
<PER-SHARE-GAIN-APPREC> (.32)
<PER-SHARE-DIVIDEND> (.90)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.82
<EXPENSE-RATIO> .007
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
